istio.io/istio@v0.0.0-20240520182934-d79c90f27776/istioctl/pkg/util/clusters/wrapper.go (about)

     1  // Copyright Istio Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package clusters
    16  
    17  import (
    18  	admin "github.com/envoyproxy/go-control-plane/envoy/admin/v3"
    19  
    20  	"istio.io/istio/pkg/util/protomarshal"
    21  )
    22  
    23  // Wrapper is a wrapper around the Envoy Clusters
    24  // It has extra helper functions for handling any/struct/marshal protobuf pain
    25  type Wrapper struct {
    26  	*admin.Clusters
    27  }
    28  
    29  // MarshalJSON is a custom marshaller to handle protobuf pain
    30  func (w *Wrapper) MarshalJSON() ([]byte, error) {
    31  	return protomarshal.Marshal(w)
    32  }
    33  
    34  // UnmarshalJSON is a custom unmarshaller to handle protobuf pain
    35  func (w *Wrapper) UnmarshalJSON(b []byte) error {
    36  	cd := &admin.Clusters{}
    37  	err := protomarshal.UnmarshalAllowUnknown(b, cd)
    38  	*w = Wrapper{cd}
    39  	return err
    40  }